Orlando and Miranda's Sparkling Date

Orlando Bloom and girlfriend Miranda Kerr had a sparkling night out together in London on Tuesday – dropping more than $2,100 on accessories.

The couple stopped by an Afghan jewelry exhibition held by the Turquoise Mountain Foundation charity at a London gallery. After browsing the display with Kerr for more than 30 minutes, Bloom picked out a $1,148 emerald ring, a $672 ruby bracelet, $265 pomegranate earrings designed by Pippa Small and $70 cufflinks from the Turquoise Mountain Collection.

Victoria's Secret model Kerr, 23, told PEOPLE that she's on vacation and "taking a month off." Although the couple have mostly remained mum about their relationship, things seem to be going well. Bloom met her parents in Sydney earlier this year.

All the net proceeds from sales fund the charity's School of Jewellery and Gem-cutting in Afghanistan. Bloom, 31, is set to portray the charity’s executive chairman, Rory Stewart, in an upcoming movie about his life.